Bug 2492770 (CVE-2026-53268) - CVE-2026-53268 kernel: netfilter: conntrack_irc: fix possible out-of-bounds read
Summary: CVE-2026-53268 kernel: netfilter: conntrack_irc: fix possible out-of-bounds read
Keywords:
Status: NEW
Alias: CVE-2026-53268
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-25 10:04 UTC by OSIDB Bzimport
Modified: 2026-08-26 04:35 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:59723 0 None None None 2026-08-26 04:35:27 UTC

Description OSIDB Bzimport 2026-06-25 10:04:49 UTC 
In the Linux kernel, the following vulnerability has been resolved:

netfilter: conntrack_irc: fix possible out-of-bounds read

When parsing fails after we've matched the command string we
should bail out instead of trying to match a different command.

This helper should be deprecated, given prevalence of TLS I doubt it has
any relevance in 2026.
Comment 1 Keith Grant 2026-06-25 23:46:45 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026062517-CVE-2026-53268-9545@gregkh/T
Comment 3 errata-xmlrpc 2026-08-26 04:35:27 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:59723 https://access.redhat.com/errata/RHSA-2026:59723
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